Producing ammonium salts.



i all whom it may concern: I Be it known that I, Cant. of philosophy and chemist, subject of the cam. BOSCH, or LUnwI GsHArsN-oN-rnE-fnmmi, GEi mANYQAssIGNon T0 BA'DISCHE ANILIN & SODA rABmx, OF LUDWIGSHAFEN-ONJDHE RHINE, GERMANY, A core rons'rmm I V PRODUCING AMMONIUM SALTS.

990,192. I No Drawing.

Kin of Prussia, residing at Ludwigshafenon.-t e-Rhine, lermany, have invented new and useful Improvements in Producing Ammonium Salts, of \vhiehthe following is a specification. I

My invention relates to the production of ammonium salts from titaniumn1tr1ds,under whleh term I include both those. compounds which only contain titanium and nitrogen and also the so-called titanium cyanonitrid, which "can easily be obtained,-

for instance, by heating a mixture of titanic acid and carbon 1n the presence of nitrogen (Deville and \Viihler, Ammlcn Jcr ('lmmia, For the 'pur-','

Vol. 103, page 230 'e t seq.)'. poses of-tlns invention, titanium nitrldand titanium cyanon-itrid are equlvalents.

vFriedel and Guerin (Oomptcs lacintlus,

82, p. 974) have stated that a titanium nitrid (Ti N on being-boiled with concentrated sulfuric acid gives rise to ammonia and' titanic acid. It is also stated in the literature on the subject that titanium c vano1 iit-rid is unattacked. by boilingconcentrated-sulfuric. acid and that by melting it at ared heat with potassium bisulfate (z'l'llNJIIW-il do? (.I'hcmie, 73, p338) the nitrogen iscvolved as such, and it is also stated (Dammer, Harmlinmh I. A'ncry (Ilium-14', ll. part 1.,

' 597 to be soluble in a mixture of nitric acid and hydrofluoric acid. In thiscase also nitrogen is set free.

In the specifications of the applications for Letters'l atent Se ial No. H8848, filed March 2, 1t)()8, and Serial No. 423,}5L, tiled March-26, 1908, l have described the production of ammonia by treating' titaniiun v cyanonitrid and the titan um nltrids with an oxidizing agent. I have now discot'cred that the titanium nitrids'can' be made to invention, the temperature used may not exc ed about 170 (3., as otlferwxse tire sul- Boson, doctor oxidsof titanium and can easily be recon-3 verted into titanium nitrid or titanium cyanonitrid.

I .T he following exampleswill serve to illus-' trate further the nature of my invention and the method of carrying it into practical "elfect, but my invention is not confined to' these examples. The parts are by weight.

Example 1: Stir finely divided titanium at a temperature of. 150 C. until decomposition is complete. Dilute with waterand blow air through the boiling solution until the titanium has allseparated out in the 'form of titanic acid, and filter this oil". The filtrate contams ammonium sulfate insolu t1on. If desired, the ammonia can be obreaction which takes place. can be represented by the equation -zx a t+ z a' Example 3: Heat finely divided titanium cyanonltrid with concentrated hydrochloric.

acid for (3 hours at 200 C., and under pressure. The resulting blue solution contains ammonium chloridand can be worked up for ammonia.

Examplegat': l-leat titanium cyanonitrid' Specification of Letters Pat ent. 1 'Iatented A111. 18, 15.". l Application tiled March 26,1508. set-mm. 423.450.

"cyanonitridjvith concentrated sulfuric acid with an :aqueous solution of aluminium chlorid under pressure, at 200 C. The tiltcred solution can be worked up for ammonia. a

Having now described my invention what I claim is:

l; The process of produein an ammonium saIt by heating a titanium nitrid with an acid, while maintaining the temperature below that at which the acid used 

